Asked whether they think Specter, a Philadelphia Republican, has done his job well enough to win re-election or whether they'd prefer a "new person" in that job, registered voters by a 53-38 percent margin said it's time to give someone else a chance, according to the poll by Susquehanna Polling and Research. Eight percent were undecided.

The numbers might reflect Specter's vote as one of three Republican senators who enabled passage of President Obama's $787 billion federal stimulus package, said James Lee, president of Harrisburg-based Susquehanna polling. But they reflect long-standing dissatisfaction among Republican conservatives with Specter's record, he said.